Protective casing for electrical device



FIG. 1 is a front right perspective view of a protective casing for electrical device in accordance with my new design;

FIG. 2 is a front left perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a left side view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines show portions of the protective casing for electrical device that form no part of the claimed design. 

CLAIM The ornamental design for a protective casing for electrical device, as shown and described. 